Bristles of a brush



FIG. 1 is a side perspective view of bristles of a brush showing my new design;

FIG. 2 is a left side elevation view of the design shown in FIG. 1;

FIG. 3 is a right side elevation view of the design shown in FIG. 1;

FIG. 4 is a top plan view of the design shown in FIG. 1; and,

FIG. 5 is a bottom plan view of the design shown in FIG. 1.

The broken lines in the drawings illustrate environmental structural and form no part of the claimed design. 

CLAIM The ornamental design for bristles of a brush, as shown and described. 